backend engineer

About us Aave Labs began with a simple question: how do we make financial services like borrowing, saving, and earning more accessible globally? We built the Aave Protocol, now the world's largest and most trusted onchain lending market, connecting decentralized finance with individuals, traditional finance, and fintech. Today, we build trusted,...

J.P. Morgan Personal Investing is seeking an engineer to join a squad delivering a first-class mobile and web investment experience. You will build and integrate with digital asset providers, work in a Java/Spring Boot/Kotlin stack, and evolve architecture toward microservices on Kubernetes with Kafka. You will collaborate with Product, Compliance and Risk...

JOIN KLEO AND BUILD THE FINANCING INFRASTRUCTURE FOR EUROPE'S COMPANIES Kleo ( is an AI-native platform that helps compaies find, match, manage, and monitor their entire financing stack: public grants, bank lending and private capital, through automated, end-to-end workflows. We replace a process that has traditionally depended on slow, manual,...

Managing Composites in Madrid is seeking a Backend Software Engineer who designs scalable Python services and robust REST APIs, while occasionally contributing frontend components to deliver end-to-end features. You will collaborate with product teams, shape architectures, deploy in cloud environments, and own technical decisions in an evolving environment...

Are you an Expert Java Backend Engineer seeking a new interesting challenge? If your answer is yes, it's your lucky day so keep reading — it can be just what you're looking for! Design, develop, and deliver high-quality, scalable and secure enterprise backend applications using Java 17+ and Spring Boot. Work with SQL and NoSQL databases, writing...

Lansweeper, located in Alicante, Spain, seeks a Backend Engineer to develop scalable backend services and data pipelines, utilizing AI tools. The role demands strong skills in Go or Rust, distributed systems, and AI tooling. Candidates will engage with a dynamic team of 40 engineers, working on high-stakes challenges in AI-assisted environments. Offer...

In this role you will build scalable backend systems for the Grow & Engage domain, shaping the customer journey from signup to premium membership. You’ll partner with product, tech leads and designers to translate user needs into robust services that power daily engagement. The position blends hands‑on development with architectural exploration in a...

Actualmente contamos con vacantes en Madrid y Bilbao para Software Engineers Backend (Java, Microservices y Python) que quieran desarrollar su carrera profesional en GFT. Buscamos personas entusiastas, con iniciativa y ganas de seguir aprendiendo, que deseen crecer en un entorno multicultural, dinámico, colaborativo y lleno de retos. Entre tus funciones...

Barcelona, Full-time, Hybrid Fledge We are a boutique search firm connecting exceptional Talent with the most innovative companies and products that positively impact our societies. We present a tailor‐made solution between fine consulting and flexible Talent search process outsourcing: Fractional Talent Acquisition Advisory Recruitment operation...

Join to apply for the Backend Engineer (Typescript) (50K€-65K€) role at Joppy We’re hiring a Backend Engineer for our client — someone who’ll own the backend systems that power our crypto and self‑custody platform. You’ll bring deep expertise in Go, TypeScript, RabbitMQ, and Kubernetes, paired with a passion for distributed systems,...

Help change one of the largest global industries: insurance brokerage. Afori's vision is to ensure every human has the right cover at the right time. Our founders previously built insurance unicorn wefox and are now building the AI layer for insurance brokers: agents that plug directly into brokers' daily workflows and take over the back-office work that...

Technology alone does not create impact - the right teams do. Founded in 2018, Parser is a boutique technology services and consulting firm helping global organisations solve complex business challenges through digital transformation, product development and AI enablement. We combine global reach with a mindset focused on agility, senior expertise, and...

Tecdata busca un Desarrollador Backend Senior especializado en Scala para un proyecto internacional de gran envergadura. La posición es 100% remota y ofrece la posibilidad de continuidad tras el proyecto inicial. Se requiere al menos 4 años de experiencia en desarrollo con Scala, sólidos conocimientos de herramientas como Play Framework, MySQL y...

Constructor.io is seeking a backend engineer focused on Python services to own production backend systems for experiments, with occasional UI work. You’ll contribute to scalable reporting pipelines, improve reliability, and collaborate with Search/Recommendations teams on data-heavy workloads. The role emphasizes correctness, observability, and product...

En AIT Tech Venture estamos construyendo HABITTOS , una plataforma que combina hábitos, inteligencia artificial y datos reales del CRM para crear el primer OS de Growth y RevOps basado en disciplina . Un sistema que captura insights de clientes, sintetiza información crítica, puntúa actividad comercial, detecta riesgos del funnel y entrena...

We are expanding our core engineering team. We are looking for an experienced Backend Engineer who thrives on solving complex technical challenges across distributed systems, data pipelines, and applied AI infrastructure. What You'll Do: Design and build scalable backend services using Python and FastAPI. Architect data storage and retrieval systems...

Vic.ai in Madrid, Spain, is seeking a Senior Backend Engineer to own the integration platform that connects our customers' ERP systems to Vic.ai and push results back at scale. We’ll build and operate backend services with TypeScript/Node.js, Elixir/Phoenix, and Python, deployed on AWS, focusing on reliability and performance for a high-scale AI product. ...

Pluxee España is seeking a Senior Backend Engineer to join the Payments Squad and help build the engine that moves money globally. You will design, implement and optimize robust backend services with a focus on data consistency, fault tolerance and scalability. You will collaborate with React/React Native teams while owning backend components, write...

Primion Technology is a global solution provider and market leader in Converged Security Solutions and Workforce Management. For more than 30 years, we have supported around 4,000 satisfied customers worldwide who rely on our certified solutions every day. As Senior Backend & Technical Lead, you combine architecture, backend engineering, and technical...

We are looking for a Senior/MID .NET Backend Engineer / Tech Lead to join a high-performing engineering team building large-scale backend platforms that support mission-critical digital products. This is a hands-on technical leadership role where you will combine software engineering excellence with architectural ownership, technical mentoring, and close...